3 4 just prior to the application of the rubber repeat above step 3 3 using tack on substrate then apply tack on rubber lining.
Rubber lining adhesion test.
To read more about astm d413 astm d378 and the equipment req.
For polymer rubber linings qualification of procedures may include adhesion testing.
The standard is divided into.
Method b 90 stripping test rubber part assembled to one metal plate.
Method a rubber part assembled between two parallel metal plates.
The vehicle engine mounts rubber coated metal components and rubber lined tanks and containers use the astm d429 standard.
Chapter rubber compound and vulcanizate testing is related to the chapter on rubber raw material testing and provides a comprehensive description of the system of testing rubber compounds materials and vulcanizates starting from sampling and testing vessels up to evaluation of test results according to specific standards.
Relevant adhesion test results obtained during the last two projects performed by the lining applicator may be referred to in.
Pull off adhesion testing is widely used to assess the protective coating process and to determine if a coating is fit for service in new construction and for repairs to existing structures.
Note before applying adhesive to the lining the rubber may require to be freshened by giving it a wipe with solvent.
Pressure sensitive tape is applied and removed over cuts made in the coating.
The testing procedures include peel strength or tensile strength of the adhesion edge.
Allow to dry until tacky on both the substrate and the rubber approximate 1 hour.
This test peels rubber conveyor belting and measures the average peel force over a 5 section.
There are many conditions that can affect the adhesion of rubber to various substrates such as metal and fabrics.
1 1 these test methods cover procedures for testing the static adhesional strength of rubber to rigid materials in most cases metals.
If a procedure that includes adhesion testing is used the quality control adhesion testing may be considered optional.
The astm d429 includes the test procedure to determine the adhesion of rubber to rigid metal substrates.
On metal substrates a more formal version of the knife test is the tape test.
Either the rubber material fails internally or at the adhesion surface to the metal.
The result is often critical to the acceptance or rejection of a coating process as the adhesion value quoted by.
Method c measuring adhesion of rubber to metal with a conical specimen.
A standard method for the application and performance of this test is available in astm d6677.
Once the test is complete you will want to record the force vs displacement.
